You know you're old when you remember Errichto being first in top contributors...

you know you are old when you have seen sus to take over the world

You know you are old if you have participated in SRMs back when rng_58 was TC admin (press F).

You know you are old if you remember times when all CF rounds were curated by a single coordinator.

You know you are old if you have participated in Marathon24/Deadline24/Challenge24/Pizza contest (press F).

You know you are old if you remember CF toppers without black first letter in the nickname.

You know you are old if you have seen tomek or bmerry competing (press F).

You know you are old if you have participated in GCJ back when R2 advancement cut-off was 1K from every R1 round, not 1.5K.

You know you are old if you remember Petr being CF top1 (press F).

I can continue for a long time...

You know you are old when you have seen Petr participating in contests using Java

And you are elderly people if you have seen Experts participating officially in Div. 1 contests.

You know you are old when you see people you know retire. F.

You know you're old when you remember tourist stream in youtube .

• I have been on codeforces for almost 5 years, ...

"Registered 3 years ago" :lying_face:

You know you are old when you remember the subtitle of Codeforces was 'sponsored by Telegram'.

You know you are old if you remember shitposting in CWD.

You know you are old when you have participated in Codeforces Round 284 (Div. 2), where sorry_dreamoon beat dreamoon.

when you don't see yourself in top contributors list anymore

My last contest is when I was in high school... Currently a master's student

You know you are old when you remember Codeforces being actually good

you are old when you saw only 1 test case in a test case

i know i am old when my first round had happened 4 years ago Codeforces Round 581 (Div. 2)

You know you are old when you see there is no more LanceTheDragonTrainer comments.

You know you are old when you remember dushenkov crying everywhere in this blog https://mirror.codeforces.com/blog/entry/102805

You know you're old when Jiangly didn't change his profile photo to his girlfriend.

You know you are old when your first Codeforces round was VK Cup 2012 Qualification Round 2 more than 13 years ago

You know you are old when you remember DmitriyH's stat by rounds

You know you are old when you remember You know you are a programming competitions addict blog which was 9 years ago

You know you are old when you won Topcoder div 2 round 652

You know you are old when you remember the fixed seed incident in Aim Tech round 4.

You know you are old when you remember some guy from Bratsk sharing an observation about negative impact of active participation in contests on the ability to solve problems and also his ice bucket challenge video.

You know you are old when you remember the blackout that erased about a month of codeforces data.

You know you are old when you remember a similar post about addiction to competitive programming, like "you know you are an addict if" or something.

You know you are old when you remember Mike posting blogs in russian about Saratov team going to some olympiads.

You know you are old when some of your comments have a smaller gap between lines, and also don't draw the ">>" when you hover over them.

You know you are old when you think for a long time if you should participate in a contest, finally deciding to participate, but not very seriously, probably you will leave early if you get tired. Most importantly, you must not forget to take a pill closer to the end of the round, because it needs to be taken 30 minutes before meal.

You know you are old when you choose your sleeping position carefully, because otherwise your spine will hurt for the next two days.

You know you are old when you read all these blogs about how Twice increases productivity, smile softly and add Cambio Dolor by Natalia Oreiro to your winamp queue.

You know you are old when you find yourself having thought of something interesting, try a little to remember what is was, then decide that it must have been not so interesting then.

You know you are old when you smile seeing your grandkids thinking you must be tricking them when you fall asleep in your chair after lunch, because you used to think the same about your granddad.

Wow you guys are young :-)

You know you are old when you watched Petr rise to the top of the rankings.

You know you are old when these was no Google Code Jam because there was no Google.

You know you are old when you remember Topcoder paying prize money for every SRM.

You know you are old when you remember contests moving from 16-bit compilers to 32-bit.

You know you are old when you had to write your own sort function, because Turbo Pascal didn't provide one.

You know you are old when you submitted solutions on a floppy disk.

You know you're old if you remember I_love_Tanya_Romanova